FormulaMod Fm-PWMHub-4N PWM Fan / Pump Hub, 4-Pin Outputs, SATA or D-Type Powered

FormulaMod Fm-PWMHub-4N PWM Fan / Pump Hub, 4-Pin Outputs, SATA or D-Type Powered

TL;DR: The Fm-PWMHub-4N centralizes radiator fans and water-cooling pump connections onto a single motherboard 4-pin PWM header, so RPM telemetry and PWM duty cycle come from one fan curve rather than multiple split headers. Power is drawn from a SATA or D-type (Molex) connector on the PSU instead of the...

Common Applications

The Fm-PWMHub-4N centralizes radiator fans and water-cooling pump connections onto a single motherboard 4-pin PWM header, so RPM telemetry and PWM duty cycle come from one fan curve rather than multiple split headers. Power is drawn from a SATA or D-type (Molex) connector on the PSU instead of the motherboard header, which keeps the 1A motherboard fan-header limit from becoming a constraint when running a full 360mm radiator stack. The 2510-4P output ports physically accept both 4-pin PWM fans and 3-pin voltage-controlled fans, the latter running at full speed and ignoring the PWM signal. The hub also supports pump connections, which is useful for D5 / DDC pumps that expose a PWM lead.

Frequently Asked Questions

Q: How does the hub get its power?

A: Through either a SATA or a D-type (Molex) 4-pin connector on the PSU. Choose whichever cable is unused on your PSU.

Q: Can I mix 4-pin PWM and 3-pin fans on this hub?

A: Yes. The 2510-4P output ports physically accept both. 3-pin fans run at full speed because they ignore PWM.

Q: Will the hub control my water-cooling pump?

A: Yes for PWM-equipped pumps such as D5 PWM and DDC PWM, where the motherboard fan curve will drive the PWM line.

Q: How is RPM reported to the motherboard?

A: The hub reports the RPM of one designated output port back to the motherboard fan header.

Q: How is it different from the Fm-PWMHub-3N?

A: The Fm-PWMHub-4N is built for 4-pin PWM control. The Fm-PWMHub-3N is a voltage-controlled 3-pin hub with a manual high / low / off switch.